Calculadora de Tempo

Calculate time difference, duration between two times, add or subtract hours and minutes, and convert between time units — all with step-by-step solutions.

Calcular

Format: HH:MM or HH:MM:SS (24h)

Select a calculation type, enter your values, and click Calculate to see results with step-by-step solution.

Guia do usuário completo

About This Calculator

This time calculator handles four common time operations: finding the difference between two clock times, adding or subtracting a duration from a time, converting between time units (seconds, minutes, hours, days, weeks), and calculating the duration between a start and end time — with automatic midnight-crossing support.

4 Calculation Types

Diferença horária

Find the exact difference between two clock times in hours, minutes, and seconds.

Add / Subtract

Add or subtract hours, minutes, seconds, or days from any clock time.

Converter unidades

Convert between seconds, minutes, hours, days, and weeks.

Duração

Calcule quanto tempo do início ao fim. Lida com travessia noturna/meia-noite.

Key Formulas

Difference: |Time₂ − Time₁| (in seconds)

Adicionar: Time + Amount → mod 86400

Convert: Value × FromFactor ÷ ToFactor

Duração: End − Start (ou 86400 − Start + End)

Notas importantes

  • Use o formato de 24 horas: 0h00 às 23h59. Por exemplo, 14h30 = 14h30.
  • Duration handles midnight crossing: Start 22:00, End 06:00 = 8 hours.
  • Adicionar/subtrair envolve cerca de 24 horas. Subtraindo depois da meia-noite soma 24h.
  • 1 dia = 86.400 segundos, 1 semana = 604.800 segundos.

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